Datasheet

ADP1046A Data Sheet
Rev. 0 | Page 40 of 88
Invalid or Unsupported Command Code
If an invalid or unsupported command code is sent to the
I
2
C slave, the I
2
C slave considers this a data content fault
and responds as follows:
• Issues a no acknowledge for the illegal/unsupported
command byte and data bytes
• Flushes and ignores the received command and data
Reserved Bits
Accesses to reserved bits are not a fault. Writes to reserved bits
are ignored, and reads from reserved bits return undefined data.
Write to Read-Only Commands
If a host performs a write to a read-only command, the I
2
C slave
considers this a data content fault and responds as follows:
• Issues a no acknowledge for all unexpected data bytes as
they are received
• Flushes and ignores the received command and data
Note that this is the same error described in the Host Sends Too
Many Bytes section.
Read from Write-Only Commands
If a host performs a read from a write-only command, the I
2
C
slave considers this a data content fault and send all 1s (0xFF) as
long as the host continues to request data.
Note that this is the same error described in the Host Reads Too
Many Bytes section.